The diffusion of O was measured by using potentiostatic and electrochemical methods at 973 to 1273K. The results could be described by:

D (cm2/s) = 8.7 x 10-4 exp[-18.8(kJ/mol)/RT]

S.Otsuka, Z.Kozuka, Y.A.Chang: Metallurgical Transactions B, 1984, 15[2], 329-35